Dont know what to say now. DC Design's post said it all.....
Looks pretty good man. There's a couple things you could've done better.
First of all the shadow under the car is way too strong. It should fade more. Take a look at the original how it should be. The tyres should be a tad darker too. Last thing i has to say is more a personal thing, the side is lower than the front which makes it weird. You could have made the lip longer or something.